@book{137659,
	author = {Cooper, Donald R. and Schindler, Pamela S.},
	title = {Business research methods /},
	publisher = {McGraw-Hill,},
	year = {2006.},
	series = {The Irwin/McGraw-Hill series, operations and decision sciences},
	address = {New Delhi :},
	edition = {9th ed.}
}